Three New Highly Oxygenated Germacranolides from Carpesium Divaricatum and Their Cytotoxic Activity

Three new highly oxygenated (2–4), and two known (1 and 5) germacranolides, were isolated from the whole plant of Carpesium divaricatum. The planar structures and relative configurations of the new compounds were determined by detailed spectroscopic analysis. The absolute configuration of 1 was esta...

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Detalles Bibliográficos
Autores principales: Zhang, Tao, Si, Jin-Guang, Zhang, Qiu-Bo, Chen, Jia-Huan, Ding, Gang, Zhang, Hong-Wu, Jia, Hong-Mei, Zou, Zhong-Mei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6102670/
https://www.ncbi.nlm.nih.gov/pubmed/29751555
http://dx.doi.org/10.3390/molecules23051078
Descripción
Sumario:Three new highly oxygenated (2–4), and two known (1 and 5) germacranolides, were isolated from the whole plant of Carpesium divaricatum. The planar structures and relative configurations of the new compounds were determined by detailed spectroscopic analysis. The absolute configuration of 1 was established using the circular dichroism (CD) method and X-ray diffraction, and the stereochemistry of the new compounds 2–4 were determined using similar CD spectra with 1. The new compound 2 and the known compound 5 exhibited potent cytotoxicity against hepatocellular cancer (Hep G2) and human cervical cancer (HeLa) cells, superior to those of the positive control cis-platin.

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